linux-kernel - [PATCH 0/5] sched: asymmetrical packing for POWER7 SMT4

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 09 Apr 2010 16:21:18 +1000
From:	Michael Neuling <mikey@...ling.org>
To:	Peter Zijlstra <peterz@...radead.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>
CC:	<linuxppc-dev@...abs.org>, <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>,
	Suresh Siddha <suresh.b.siddha@...el.com>,
	Gautham R Shenoy <ego@...ibm.com>
Subject: [PATCH 0/5] sched: asymmetrical packing for POWER7 SMT4

This patch series implements asymmetric SMT packing which ensures
consistently good performance on POWER7.  

I'm no scheduler expert so these probably need some review.  It works
for my simple test case on a POWER7 with SMT4.  I can now run a number
of CPU bound processes and they are pulled down to lower threads
giving the best performance consistently. 

Suresh: some of this touches code you changed recently, so you may
want to test in your environment.

The 1st patch is a fix for SMT4 in general.
The 2nd adds actual the asymmetrical packing infrastructure.  
The 3rd adds the powerpc specific hooks for POWER7.
The 4th and 5th are fixes required for packing to work.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/